package com.example.springbootlearn.concurrent;

import java.util.HashMap;

/**
 * @author caiji Mr. Li
 * @date 2019/10/25 9:41
 */
public class HashMapTest {

    public static void main(String[] args) {
        HashMap<String, String> map = new HashMap(4);
        map.put("aaa", "aaa");
        map.put("bbb", "bbb");
        map.put("ccc", "ccc");
        map.put("ddd", "ccc");
        System.out.println(map.size());
    }
}
